fac·tion 1 (fkshn)n.
1. A group of persons forming a cohesive, usually contentious minority within a larger group.
Stuart, you are, as usual, twisting definitions to coincide with your inerpretation. I really doubt that you can justify your assertion that there is an organised, cohesive group of St Mirren supporters which is bigoted and intolerant towards other sects. I think you will find that those expressing their opinions are individuals and not members of such a group.